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January 13th, 2026 :: 1:44 am CST   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated January 13th at 12:54 am 
Temperature:37°F Dew Point:27°F
Barometer:30.04 inHg Wind:N 24 Mph
Humidity:64.6% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jan 13th
Wednesday
Jan 14th
Thursday
Jan 15th
Friday
Jan 16th
Saturday
Jan 17th
Cloudy Cloudy Cloudy Mix of rain and snow Cloudy
52°F
39°F
21°F
28°F
18°F
36°F
25°F
19°F
11°F
 
 Decatur Detailed Weather Forecast  
 
Tuesday, January 13th, 2026
Overnight Temperature: 38°F
Cloudy. Windy at times.
Morning Temperature: 47°F
Cloudy. Windy.
Afternoon Temperature: 49°F
Cloudy. Windy at times.
Evening Temperature: 45°F
Cloudy. Windy at times.
Wednesday, January 14th, 2026
Overnight Temperature: 39°F
Cloudy. Windy.
Morning Temperature: 29°F
Sunny with cloudy periods. Windy.
Afternoon Temperature: 25°F
Sunny. Windy at times.
Evening Temperature: 22°F
Clear. Windy at times.
Thursday, January 15th, 2026
Overnight Temperature: 19°F
Clear. Windy at times.
Morning Temperature: 23°F
Mostly sunny. Windy at times.
Afternoon Temperature: 24°F
Cloudy.
Evening Temperature: 27°F
Cloudy. Windy.
Friday, January 16th, 2026
Overnight Temperature: 29°F
Cloudy with a few flurries. Windy.
Morning Temperature: 34°F
Cloudy. Windy at times.
Afternoon Temperature: 29°F
Cloudy.
Evening Temperature: 27°F
Cloudy with a chance of flurries. Windy at times.
Saturday, January 17th, 2026
Overnight Temperature: 18°F
Cloudy with a slight chance of flurries. Windy.
Morning Temperature: 16°F
Cloudy. Windy.
Afternoon Temperature: 14°F
Mostly cloudy. Windy.
Evening Temperature: 12°F
Cloudy. Windy.
Sunday, January 18th, 2026
Overnight Temperature: 8°F
Cloudy. Windy at times.
Morning Temperature: 13°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 17°F
Cloudy with sunny periods.
Evening Temperature: 18°F
Clear with cloudy periods. Windy at times.
Monday, January 19th, 2026
Overnight Temperature: 20°F
Cloudy. Windy at times.
Morning Temperature: 33°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 28°F
Sunny. Windy.
Evening Temperature: 20°F
Cloudy. Windy.
Tuesday, January 20th, 2026
Overnight Temperature: 15°F
Cloudy. Windy at times.
Morning Temperature: 17°F
Cloudy.
Afternoon Temperature: 19°F
Cloudy.
Evening Temperature: 20°F
Cloudy. Windy at times.
Wednesday, January 21st, 2026
Overnight Temperature: 22°F
Cloudy with a chance of flurries. Windy at times.
Morning Temperature: 29°F
Cloudy. Windy at times.
Afternoon Temperature: 28°F
Sunny.
Evening Temperature: 27°F
Clear with cloudy periods.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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